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mihalych1998 [28]
2 years ago
13

Answer questions about aspects of Watson-Crick model of DNA structure

Biology
1 answer:
tino4ka555 [31]2 years ago
6 0

Answer:

a. The directionality of the complementary strand is antiparallel. The double-stranded DNA is antiparallel comprising two strands, which run alongside each other, however, point in reverse directions. In a double-stranded molecule of DNA, the 5 prime ends of one strand align with the 3 prime ends of the other strand, and vice versa.  

b. The mediation of base pairing is done by non-covalent hydrogen bonds. It is reversible, that is, the strands can separate and can come combined again without any chemical modification.  

The specificity of base pairing is illustrated by hydrogen bonds that is, the first strand produces hydrogen bonds only with a particular base in the second strand, and these two bases produce a base-pair.  

c. The interaction or association of non-covalent type, that is, hydrophobic interaction and hydrogen bonding. Collectively, they both are strong. In the process, one base associate with the other base on the complementary strand.  

d. The phosphate backbone possesses the tendency to associate with water on the outside of the molecule, and this is favorable chemically as both the strands are held together by hydrogen bond and hydrophobic interaction.  

The polar molecules of sugar can produce hydrogen bonds with the surrounding molecules of water. The negatively charged phosphate group associate with the positively charged ions. The nonpolar nitrogen bases are found within the molecule and associate favorably through stacking interactions.  

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A stopwatch would provide the most accurate measurement when sprinting
6 0
3 years ago
A stock transfer can involve movements:______ A. Between different plants within the same storage location. B. Between stroage l
gogolik [260]

Answer:A,B,D,E,F

Explanation:

Stock can be transfer depending on the organization.

The movement of stock is divide into three broad categories

Stock transfer from Plant to plant- movement of stock from a plant to another plant

Stock transfer from Company code to company code- movement from ome company code to another

Stock transfer from Storage location to storage location

Between different plants within the same storage - stock can be moved from one plant to another within the same storage this will lead to a change in quantity in both plant and it should be noted

Between storage locations within one plant- stock location can be change in a plant but it doesn't affect the quantity.

Between plants in different company code- stock can also be moved from one company code to another this requires adequate documentation when the stocked are moved.

5 0
3 years ago
Which of the following statements about magnesium atoms is NOT correct? 1. All magnesium atoms have the same number of protons.
Fantom [35]

Answer:

5. All magnesium atoms have the same number of neutrons

Explanation:

Magnesium (Mg) is a chemical element. Its atomic number (Z) is 12 (number of protons in the nucleus of the Mg atom).

The Magnesium has three stable isotopes: 24Mg, 25Mg and 26Mg. All these isoforms have 12 protons in their atoms (same atomic number), however they  vary in the mass number of the atom (M).

The mass number of the atom (M) is equal to the sum of protons and neutrons in the nucleus.

Based on this information we can know how many neutrons each isotope has

24 Mg = 12 protones + 12 neutrons

25Mg = 12 protones + 13 neutrons

26Mg = 12 protones + 14 neutrons

In this way we conclude that <u>not all magnesium atoms have the same number of neutrons</u>

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3 years ago
Intervention by the federal government is necessary when local environmental policies and actions
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Answer:

Affect people in other states.

8 0
2 years ago
Read 2 more answers
If an individual's gametes are exposed to x-rays before being passed to offspring what will most likely happen?
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The individuals gametes cells would be damaged, possibly taking his ability to have offspring.
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